Support group for parents of twins and other multiples in Singapore.

Mostly in Finnish, but has an English section and lots of international links.

Multiple Connection is a Malta based support group offering support to families of twins, triplets and multiples on the Maltese islands.

The largest German organisation for families with higher multiple birth children, from triplets onwards.

Official site; a non-profit, nation-wide support group for parents of twins and higher order multiple birth children.